A new self-organizing mechanism for deep-focus earthquakes

  title={A new self-organizing mechanism for deep-focus earthquakes},
  author={H. Green and P. Burnley},
  • H. Green, P. Burnley
  • Published 1989
  • Geology
  • Nature
  • THE mechanism of deep-focus earthquakes has been a puzzle since their discovery almost 70 years ago1, 2, because brittle fracture and frictional sliding at depths in excess of 100–200 km would require unrealistic rock strengths3, 4. Rock strength does increase with pressure, but a few hundred MPa (equivalent to 10–20 km depth) suffices to inhibit most fracture, and elevated temperature activates ductile mechanisms that operate at stresses less than the fracture stength. A range of mechanisms… CONTINUE READING
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